-
公开(公告)号：DE3407722A1
公开(公告)日：1985-09-05
申请号：DE3407722
申请日：1984-03-02
Applicant: BASF AG
Inventor： STECK WERNER DR , JAKUSCH HELMUT DR , EBENHOECH FRANZ LUDWIG DR
-
12.发明专利
公开(公告)号：DE2860071D1
公开(公告)日：1980-11-13
申请号：DE2860071
申请日：1978-07-28
Applicant: BASF AG
Inventor： BRODT RUDOLF DR , JAKUSCH HELMUT DR , KOESTER EBERHARD DR , LOESER WERNER DR , OHLINGER MANFRED DR , SARNECKI WILHELM DR , STECK WERNER DR
Abstract: A process for the manufacture of acicular ferrimagnetic iron oxide by dehydrating acicular iron(III) oxide hydroxides to give acicular iron(III) oxides, then reducing these iron(III) oxides at from 300 DEG to 650 DEG C. by means of an organic compound which decomposes in this temperature range, and oxidizing the reduced product with an oxygen-containing gas at from 200 DEG to 500 DEG C., wherein the acicular iron(III) oxide hydroxides employed consist of a mixture of goethite and lepidocrocite, containing at least 60% of the latter, and the dehydration is carried out at from 250 DEG to 700 DEG C.
-
公开(公告)号：DE3322746C2
公开(公告)日：1994-06-23
申请号：DE3322746
申请日：1983-06-24
Applicant: BASF AG
Inventor： BALZ WERNER DR , BAUR REINHOLD DR , FESER RAINER DR , JAKUSCH HELMUT DR , KOVACS JENOE DR , OHLINGER MANFRED DR , RUDOLF PETER DR
-
公开(公告)号：DE3885825D1
公开(公告)日：1994-01-05
申请号：DE3885825
申请日：1988-09-09
Applicant: BASF AG
Inventor： KOVACS JENOE DR , MELZER MILENA , BALZ WERNER DR , LENZ WERNER DR , LOCH WERNER DR , JAKUSCH HELMUT DR
IPC: G11B5/706 , C09D5/23 , C09D7/12 , C09D167/00 , C09D177/00 , C09D183/04 , G11B5/70 , G11B5/702 , G11B5/708 , G11B5/71
Abstract: The invention relates to magnetic recording media which have at least one magnetizable layer strongly bonded to a nonmagnetic substrate, the magnetizable layer essentially consisting of magnetic material finely divided in an organic polymer binder, a dispersant, a lubricant and further conventional additives.
-
公开(公告)号：DE3885380D1
公开(公告)日：1993-12-09
申请号：DE3885380
申请日：1988-08-23
Applicant: BASF AG
Inventor： MEYER BERND DR , STECK WERNER DR , BOETTCHER BERNHARD DR , JAKUSCH HELMUT DR , FESER RAINER DR
IPC: C01G37/02 , C01G37/027 , G11B5/706 , H01F1/10
-
Patent Agency Ranking
公开(公告)号：DE4107499A1
公开(公告)日：1992-09-10
申请号：DE4107499
申请日：1991-03-08
Applicant: BASF AG
Inventor： RICHTER HANS JUERGEN DR , SCHWAB EKKEHARD DR , JAKUSCH HELMUT DR , HIBST HARTMUT DR , GRAU WERNER DR , KNELLER ECKHART PROF DR , HAWIG REINHARDT
Abstract: A ferromagnetic material is based upon an exhange coupling mechanism in which a hard magnetic phase (1) and a soft magnetic phase (20 are combined. While hard magnetic materials have a high anisotropy and a relatively low magnetic saturation, the soft materials exhibit the opposite effect. By coupling the materials an optimum is achieved. The volume of the soft magentic material is selected to be greater than that of the hard magnetic material. After removing a magnetic field from the material the remnant field effect is such that MRev is greater than 2.5. The material is an alloy of REx.Fey.Bz.Vu.Siv, where REx is a rare erth material. USE/ADVANTAGE - High performance material for permanent magnets, broad band microwave absorbers, magnetic recording material.
-
公开(公告)号：DE3677402D1
公开(公告)日：1991-03-14
申请号：DE3677402
申请日：1986-04-11
Applicant: BASF AG
Inventor： ARNDT VOLKER DR , MEYER BERND DR , STECK WERNER DR , JAKUSCH HELMUT DR
-
公开(公告)号：DE3664826D1
公开(公告)日：1989-09-07
申请号：DE3664826
申请日：1986-09-30
Applicant: BASF AG
Inventor： STECK WERNER DR , HABERKORN HERBERT DR , MAROSI LASZLO DR , HUEBNER WERNER , JAKUSCH HELMUT DR
IPC: H01F1/11 , C01G37/027 , G11B5/706 , H01F1/10
Abstract: Ferromagnetic chromium dioxide is improved by subjecting chromium dioxide materials prepared by a known method to an additional heat treatment.
-
公开(公告)号：DE3731066A1
公开(公告)日：1989-04-06
申请号：DE3731066
申请日：1987-09-16
Applicant: BASF AG
Inventor： KOVACS JENOE DR , MELZER MILENA , BALZ WERNER DR , LENZ WERNER DR , LOCH WERNER DR , JAKUSCH HELMUT DR
IPC: G11B5/706 , C09D5/23 , C09D7/12 , C09D167/00 , C09D177/00 , C09D183/04 , G11B5/70 , G11B5/702 , G11B5/708 , G11B5/71
Abstract: The invention relates to magnetic recording media which have at least one magnetizable layer strongly bonded to a nonmagnetic substrate, the magnetizable layer essentially consisting of magnetic material finely divided in an organic polymer binder, a dispersant, a lubricant and further conventional additives.
-
公开(公告)号：DE3728453A1
公开(公告)日：1989-03-09
申请号：DE3728453
申请日：1987-08-26
Applicant: BASF AG
Inventor： MEYER BERND DR , STECK WERNER DR , BOETTCHER BERNHARD DR , JAKUSCH HELMUT DR , FESER RAINER DR
IPC: C01G37/02 , C01G37/027 , G11B5/706 , H01F1/10
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.025 seconds)
